Composite structure of rotary valve

ABSTRACT

A composite structure of rotary valve is provided, which includes a body including the containing hole of the disc, and a metal body according to the shape of body formed in the body and covered by the body, wherein the metal body improves the explosion-proof, pressure-proof, and acid/base-resistant strength and circularity of the valve body in the manufacturing process of the rotary valve, the circularity of the body is conducive to connect with a pipe line. A stem is mounted on the disc, wherein the stem is extended upwardly and combined with handle/gear/electric/pneumatic/hydraulic, or chain operation component, such that the disc can be opened or closed.

FIELD OF THE INVENTION

The present invention relates to the composite structure of a rotary valve, in particular to a metal body formed in the rotary body and completely covered by the body, wherein to improve the explosion-proof, pressure-proof, and acid/base-resistant and keep the circularity of the body in the manufacturing process, thus is conducive to connect with a pipe, and archives a structural innovation of the rotary valve with the benefit of controlling the rotary valve to control the liquid flowing or not.

DESCRIPTION OF RELATED ART

According to commercially available rotary valves, the bodies thereof are made of plastic material, such as ABS plastic material (ACRYLONITRILE-BUTADIENE-STYRENE, propylene, butadiene and styrene copolymer), each body includes a disc which is capable to rotate and determine liquid flowing or not, and the body is made of plastic material to provide excellent fluidity and color uniformity in the heating and melting process and has advantages of non-toxic, toughness and impact resistance. The ABS plastic material has the above advantages, but the manufacturer has to consider how to increase the forming thickness of the body for ensuring that the body can withstand high pressure of flowing fluid in the pipe with the characteristics of the plastic material. In the injection molding process, plastic material has to be molded in very short time without deformation. Thus, people doing their utmost to improving the structural strength of traditional rotary valve. However, increasing the thickness of the valve body causes risks of increasing the rate of defective unit and decreasing the rate of non-defective unit in the manufacturing process. Secondly, since the rotary valve is made of plastic material, which pressure resistant is inadequate, that delivery of high-pressure liquid can not be applied, could easily lead to problems of leakage fault.

And to increase the pressure-resistant strength of the rotary valve itself, there is the structure of the body made of metal material. Its advantage is great resistant to pressure, but the drawback is easy to rust, heavy weight; construction is not easy, and vulnerably impacted by environmental pH value, as a result, is damaged by erosion.

Therefore, the inventor of the present invention with many experiences of product designing and manufacturing researched the structural problem of the above rotary valve, and invents the rotary valve of the present invention to solve the above problem.

SUMMARY OF THE INVENTION

The main objective of the present invention is to provide a structural innovation of the composite structure for a rotary valve with good structural strength, pressure-resistant, and enough to resist the pH of the environment to prolong life, moderate weight, easy construction, but also to improve product quality.

To archive above objective, the composite structure of a rotary valve of the present invention is included the containing hole of the disc of the body, which is including a valve seat for matching the containing hole of the disc, and a metal valve body is formed in the body and covered by the body, wherein the metal valve body improves the explosion-proof and pressure-resistant strength and circularity of the valve body in the manufacturing process of the rotary valve, the circularity of the valve body is conducive to connect with a pipe line, thus provides benefit of controlling the rotary valve to control the liquid flowing or not.

The composite structure of a rotary valve of the present invention can be widely used in all kinds of rotary valve, such as handle/gear/electric/pneumatic/hydraulic, or chain operation, so that the disc can be opened or closed.

The metal body of the rotary valve of the present invention located in the valve body is designed according to the shape of the valve body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of the handle-operation rotary valve of the present invention;

FIG. 2 is a side view of the body of the rotary valve of embodiment 1 of the present invention;

FIG. 3 is a cross sectional view of the cutting line A-A in FIG. 2;

FIG. 4 is a cross sectional view of the cutting line B-B in FIG. 2;

FIG. 5 is a side view of the metal valve of embodiment 1 of the present invention;

FIG. 6 is a front view of the metal valve of embodiment 1 of the present invention;

FIG. 7 is a front view of the metal valve of embodiment 2 of the present invention;

FIG. 8 is a cross sectional view of the cutting line C-C in FIG. 7;

FIG. 9 is a cross sectional of embodiment 2 of the present invention combined with valve body;

FIG. 10 shows a rotary valve body applying the present invention in gear operation;

FIG. 11 shows a rotary valve body applying the present invention in pneumatic operation;

FIG. 12 shows a rotary valve body applying the present invention in electric operation.

FIGURES

Representative figure: FIG. 3

Symbols of representative figure:

valve body 1, valve stem groove 1 a, containing hole 10, encircled body 11, ribs 111, encircled neck 12, operation component base 13, through hole 120, metal valve body 3, encircled part 30, operation component setting part 32, via hole 320

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Herein below preferred the composite structure of the rotary valve of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is shown an embodiment of the composite structure of the handle-operation rotary valve of the present invention. The present invention can be not only used in the embodiment of the rotary valve in FIG. 1, but also can be used in other type rotary valve, such as gear operation (with referred to FIG. 10), or pneumatic operation (with referred to FIG. 11), or electric operation (with referred to FIG. 12), or hydraulic operation or chain operation component rotary valve. The rotary valve of the present invention comprises body 1, and containing hole of the disc 10 is formed for the disc 2; the disc 2 comprises the stem 20, which is extended downwardly from handle operation component 21, or gear operation (with referred to FIG. 10) or pneumatic operation (with referred to FIG. 11), or electric operation (with referred to FIG. 12), or hydraulic operation, or chain operation component, and pass through disc 2, whereby the distal end of which is located in the stem groove la of the body 1, and fixed by a nut 22 over the handle 21, such that the disc 2 can be rotated to open or close by controlling the handle 21.

With referred to FIG. 2-4, the value body 1 is made of ABS plastic material, such as ACRYLONITRILE-BUTADIENE-STYRENE, propylene, butadiene and styrene copolymer, the body 1 is also available made of other suitable plastic materials. The body 1 comprises an encircled body 11 which includes multiple bolt holes 110 formed on the encircled body 11 and providing the body 1 fixed by bolts with the need of the use of the environment. Multiple ribs 111 is formed on the surfaces of both sides of the encircled body 11 and improving the impact resistance of the body 1; an encircled neck 12 is formed on the body 1 and comprising a operation component base 13 formed on the upper end of the encircled neck 12. A through hole 120 is formed between the containing hole of the disc 10 and the operation component base 13 and providing the stem 20 capable to perforate through the through hole 120 easily. A metal valve 3 is located in the body 1 and covered by the body 1.

With referred to FIG. 4-6, showing embodiment 1 of metal value body 3; the metal valve body 3 is an integrally molded structure. The rotary valve further comprises an encircled part 30 with multiple via holes 300 thereon, and the encircled part 30 is designed for fitting the encircled body 11 of the body 1, whereby the via holes 300 of the encircled part 30 are corresponded to the bolt holes 110 of the encircled body 11 of the body 1. A neck 31 is formed on the encircled part 30 and comprising a passage 310 formed on the neck 31 for coordinating the encircled neck 12 of the body 1 and the through hole 120 thereof. An operation component setting part 32 is mounted on the neck 31 and comprising multiple via holes 320 for matching the operation component base 13 of the body 1.

With referred to FIG. 7-9, showing embodiment 2 of metal value body 3, and the embodiment 2 of metal valve body 3 a is more suitable for large rotary valve; of course it could be used in a small rotary valve too. The metal valve body 3 is an integrally molded structure. The rotary valve further comprises an encircled part 30 with multiple via holes 300 thereon, and the encircled part 30 is designed for fitting the encircled body 11 of the body 1, whereby the via holes 300 of the encircled part 30 are corresponded to the bolt holes 110 of the encircled body 11 of the body 1. An upper neck 31 a is formed on the encircled part 30; the upper neck 31 a is an encircled shape, slightly different from the neck 31 of embodiment 1, comprising a through hole 310 a for matching the encircled neck 12 of the body 1 and the through hole 120 thereof. With referred to FIG. 9, multiple elongated holes 312 are formed on the encircled wall 311 of upper neck 31 a in order to enable the body 1, while molding, to completely cover the upper neck 31 a, and avoid the destruction of metal valve body 3 a due to environmental pH value. An operation component setting part 32 is mounted on the neck 31 a and comprising multiple via holes 320 for matching the operation component base 13 of the valve body 1. A lower neck 33 is formed on the encircled part 30; the upper neck 31 a is an encircled shape corresponding to the setting location and shape of the upper neck 31 a, and comprising the via hole 330 for matching downwardly formation of the stem 20 of the body 1. With referred to FIG. 9, multiple elongated holes 332 are formed on the encircled wall 311 of lower neck 33 in order to enable the body 1 to completely cover the lower upper neck 33, and avoid the destruction of metal valve body 3 a due to environmental pH value. As for the combination of encircled part 30, upper neck 31 a and lower neck 33 of metal valve body 3 a shall be either by welded or connected way. With referred to FIG. 7 and FIG. 8, to combine the encircled part 30 and the upper neck 31 a, slots 313 are formed at two sides of upper neck 31 a, wherein the upper end of encircled part 30 is set, and then welded or connected integrally. With referred to FIG. 7 and FIG. 8, to combine the encircled part 30 and the lower neck 33, slots 313 are formed at two sides of lower neck 33, wherein the lower end of encircled part 30 is set, and then welded or connected integrally.

In summary, the metal valve body 3 has to be put in a mold of the body 1 before molding the valve 1 with referred to FIG. 2 and FIG. 9. The metal valve bodies 3 and 3 a are covered by the valve body 1 after the valve body molded. Thus, the metal valve bodies 3 and 3 a improve the structural strength of the valve body 1 without increasing the thickness of the valve body 1. The shape of the metal valve body 3 is corresponding to the shape of the body, such that the body is capable to sustain higher liquid flow pressure of pipe and increase the explosion-proof and pressure-resistant strength thereof, with the advantages of both plastic and metal valve bodies. Without increasing the thickness of the body in the manufacturing process, the consumption of the plastic material can be maintained, and the body can be rapid forming and molding, such that the liquid in the pipe cannot leak and can avoid environmental contamination or waste of water resources.

DESCRIPTION OF SYMBOLS

body 1, stem slot 1 a, containing hole of the disc 10, encircled body 11, bolt holes 110, ribs 111, encircled neck 12, operation component base 13, via hole 120, disc 2, stem 20, handle 21, nut 22

metal valve body 3, encircled part 30, through holes 300, neck 31, passage 310, operation component setting part 32, through holes 320,

-   -   metal valve body 3 a, upper neck 31 a, via holes 310 a,         encircled wall 311, elongated hole 312, slot 313, lower neck 33,         via holes 330, encircled wall 331, elongated hole 332, slot 333. 

What is claimed is:
 1. The composite structure of a rotary valve comprises: a body including the containing hole of the disc, and a metal body according to the shape of body formed in the body and covered by the body, wherein the metal body improves the explosion-proof, pressure-proof, and acid/base-resistant strength and circularity of the valve body in the manufacturing process of the rotary valve, the circularity of the body is conducive to connect with a pipe line; and a stem is mounted on the disc, wherein the stem is extended upwardly and combined with handle/gear/electric/pneumatic/hydraulic, or chain operation component, such that the disc can be opened or closed.
 2. The composite structure of rotary valve as claimed as claim 1, wherein the valve body comprises an encircled body which is including: multiple bolt holes formed on the encircled body and providing the rotary valve fixed by bolts; multiple ribs formed on the surfaces of the both sides of the encircled body and improving the impact resistance of the body; an encircled neck formed on the body and comprised an operation component base formed above the encircled part; and a through hole formed between the containing hole of the disc and the operation component base and providing the stem can perforate through the through hole easily.
 3. The composite structure of rotary valve as claimed as claim 1, wherein the metal valve body integrally molded structure, and the rotary valve further comprises: an encircled part with multiple via holes thereon for fitting the encircled body of the body and the bolt holes formed on the encircled body; a neck formed on the encircled part and comprising a passage formed on the neck for matching an encircled neck of the body and the through holes; and an operation component setting part formed on the neck and comprising through holes for matching the operation component base of the body.
 4. The composite structure of rotary valve as claimed as claim 1, wherein the metal valve body comprises an encircled part, which is including: multiple through holes, for matching the encircled body of the body; an upper neck with encircled shape, comprising thorough holes for matching the encircled neck of the body, an operation component setting part is formed above the upper neck, comprising multiple through holes, for matching the operation component base of the body; a lower neck with encircled shape, corresponding to the formation location of, and comprising through holes for matching the extension of the stem of the body.
 5. The composite structure of rotary valve as claimed as claim 4, wherein the metal valve body comprises an upper neck, which is including an encircled wall and comprising: multiple elongated holes, in order to enable the body while molding to completely cover the upper neck, and avoid the destruction of metal valve body due to environmental pH value.
 6. The composite structure of rotary valve as claimed as claim 4, wherein the metal valve body comprises a lower neck, which is including an encircled wall and comprising: multiple elongated holes, in order to enable the body while molding to completely cover the lower neck, and avoid the destruction of metal valve body due to environmental pH value.
 7. The composite structure of rotary valve as claimed as claim 4, wherein the combination among the encircled part, the upper neck and the lower neck of the metal valve body shall be welded or connected.
 8. The composite structure of rotary valve as claimed as claim 7, wherein for the combination of the encircled part and the upper neck of the metal valve body, slots are formed at two sides of the upper neck, wherein the upper end of encircled part is formed, and then welded or connected integrally.
 9. The composite structure of rotary valve as claimed as claim 7, wherein for the combination of the encircled part and the lower neck of the metal valve body, slots are formed at two sides of the lower neck, wherein the lower end of encircled part is formed, and then welded or connected integrally. 